FR3136971A1 - Keratin fiber treatment process - Google Patents

Abstract

The present invention relates to a process for treating keratin fibers comprising the application to the fibers of a composition comprising at least one chemical oxidizing agent, at least one (bi)carbonate and at least one silicate, the process also implementing at least one minus one amino alkoxysilane.

Description

Keratin fiber treatment process Technical field of the invention

The present invention relates to a process for treating keratin fibers comprising the application to the fibers of a composition comprising at least one chemical oxidizing agent, at least one (bi)carbonate and at least one silicate, the process also implementing at least one minus one amino alkoxysilane.

Background of the invention

When a person wants to change their hair color, especially when they want to get a color lighter than their original color, it is often necessary to first lighten or bleach the hair. To do this, we use lightening or bleaching products.

Hair lightening is assessed by the pitch which characterizes the degree or level of lightening. The notion of “tone” is based on the classification of natural shades, a tone separating each shade from the one that immediately follows or precedes it. This definition and classification of natural shades is well known to hairdressing professionals and published in the work “Sciences of hair treatments” by Charles ZVIAK 1988, Ed. Masson, pp.215 and 278.

Tone heights range from 1 (black) to 10 (light light blonde), with one unit corresponding to one tone; the higher the number, the lighter the shade.

It is known to lighten or bleach hair, with lightening or bleaching compositions containing at least one chemical oxidizing agent, under alkaline pH conditions in the vast majority of cases. This oxidizing agent has the role of degrading the melanin of the hair, which, depending on the nature of the oxidizing agent present and the pH conditions, leads to a more or less pronounced lightening of the fibers. So, for relatively light lightening, the oxidizing agent is generally hydrogen peroxide. When greater lightening is desired, particularly when the treated hair is dark, persulfates are usually used in the presence of hydrogen peroxide. However, the lightening obtained by the action of such an association is not always satisfactory because we obtain hair with unaesthetic yellow-orange shades which deviate from the natural shades, which complicates subsequent coloring by limiting to obtaining warm tones. Additionally, lightening compositions based on persulfates can lead to degradation of fiber quality. Furthermore, compositions based on persulfates are generally not chemically compatible with the presence of oxidation dyes and/or direct dyes to be able to bleach the hair fiber and color it in a single step. Thus, when it is desired to simultaneously bleach and color keratin fibers, a two-step process is used with a first step of bleaching the keratin fibers followed by a second step of coloring the keratin fibers with using a coloring composition generally comprising one or more direct dyes and/or one or more oxidation dyes.

Thus, there is a real need to develop a process which makes it possible to obtain effective lightening of keratin fibers, particularly dark keratin fibers, with a less yellow and more natural result. Such a process must also be more respectful of the quality of the fibers, in particular by minimizing their degradation. Finally, such a process must also be compatible with the presence of direct dyes and/or oxidation in order to obtain a good rise in coloring, intense and chromatic colors and also make it possible to achieve a wider range of colors.

The applicant has surprisingly discovered that all or part of these objectives can be achieved by the method according to the present invention.

According to a first aspect, the present invention relates to a process for treating keratin fibers comprising:
a) the application to the keratin fibers of one or more amino alkoxysilanes chosen from the compounds of formula(I)following and/or their oligomers:

in which :
-Rarepresents a hydroxy group (OH), an alkyl group having from 1 to 20 carbon atoms, preferably methyl, or an alkoxy group having from 1 to 10 carbon atoms, preferably from 1 to 6 carbon atoms, in particular a ethoxy group;
-RbAndRC, identical or different represent a hydrogen atom, an alkyl group having from 1 to 20 carbon atoms, preferably from 1 to 6 carbon atoms, in particular an ethyl group; it being understood that ifRadoes not represent an alkoxy group, thenRbAndRCcannot simultaneously represent a hydrogen atom;
-idesignates an integer ranging from 1 to 20, preferably ranging from 1 to 6, in particular from 1 to 3 such as 3;
b) the application to the keratin fibers of a composition(B)including:
i) one or more chemical oxidizing agents chosen from hydrogen peroxide, hydrogen peroxide generating systems other than peroxygenated salts and their mixtures;
ii) one or more compounds chosen from carbonates, carbonate generating systems, bicarbonates, bicarbonate generating systems and mixtures thereof, preferably from carbonates, bicarbonates and mixtures thereof;
iii) one or more silicates;
in which the amino alkoxysilane(s) are included:
- in the composition(B); and or
- in a separate composition(HAS), the composition(HAS)being applied to the keratin fibers before the composition(B); and or
- in a separate composition(VS), the composition(VS)being applied to the keratin fibers after the composition(B);
Being heard that :
- the essays(HAS)And(VS)may be the same or different; And
- possibly at least one of the compositions(HAS),(B)Or(VS)comprises one or more dyes, preferably chosen from direct dyes, oxidation dyes and mixtures thereof.

According to a second aspect, the present invention relates to a device with several compartments comprising:
▪ a first compartment containing a composition(B1) including:
- one or more chemical oxidizing agents chosen from hydrogen peroxide, hydrogen peroxide generating systems other than peroxygenated salts and their mixtures; And
▪ a second compartment containing a composition(B 2 ) including:
- one or more compounds chosen from carbonates, carbonate generating systems, bicarbonates, bicarbonate generating systems and their mixtures; And
- one or more silicates; And
▪ possibly another compartment containing a composition(B3) including one or more coloring agents, preferably chosen from direct dyes, oxidation dyes and mixtures thereof; And
▪ possibly another compartment containing a composition(HAS)as defined previously; And
▪ possibly another compartment containing a composition( VS )as defined previously;
Being heard that :
- at least one of the compositions(B1),(B2),(B3),(HAS)Or(VS)comprises one or more amino alkoxysilanes as defined above; And
- possibly at least one of the compositions(B2), (HAS)Or(VS) comprises one or more coloring agents, preferably chosen from direct dyes, oxidation dyes and mixtures thereof.

According to a third aspect, the subject of the present invention is composition (B) as defined above, comprising one or more amino alkoxysilanes as defined above and optionally one or more coloring agents, preferably chosen from direct dyes, dyes. oxidation and their mixtures.

According to a fourth aspect, the subject of the present invention is the composition (B 2 ) as defined above comprising one or more amino alkoxysilanes as defined above and optionally one or more coloring agents, preferably chosen from direct dyes, dyes. oxidation and their mixtures.

Brief description of the figures

is a graph representing the variation of the intensity L* as a function of the parameter b* for the process according to the invention (Examples 2 and 3) and the comparative process using compositions based on persulfate (Example 1), the values of L* and b* being measured in the CIE L*a*b* system.

Detailed description of the invention

For the purposes of the present invention, and unless otherwise indicated:

▪ by "keratin fibers" we mean fibers of human or animal origin such as hair, body hair, eyelashes, eyebrows, wool, angora, cashmere or fur. According to the present invention, the keratin fibers are preferably human keratin fibers, more preferably hair;

▪ by “salt” we mean an addition salt with an organic or mineral acid or base. The addition salts with an acid are in particular chosen from addition salts with acids such as hydrochloric acid, hydrobromic acid, sulfuric acid, citric acid, succinic acid, acid tartaric acid, lactic acid, tosylic acid, benzene sulfonic acid, phosphoric acid or acetic acid. The addition salts with a base are in particular chosen from addition salts with bases such as the alkalizing agents defined below, in particular the hydroxides of alkali metals, the hydroxides of alkaline earth metals, ammonia, amines or alkanolamines.

▪ by “silicate” we mean a salt of a silicic acid.

▪ by “coloring agent” we mean an oxidation dye, a direct dye or a pigment, preferably an oxidation dye or a direct dye.

▪ by “oxidation dye” we mean an oxidation dye precursor chosen from oxidation bases and couplers. Oxidation bases and couplers are poorly or uncolored compounds which, through a condensation reaction in the presence of an oxidizing agent, give a colored species.

▪ by “direct dye” we mean a natural and/or synthetic dye, including in the form of extract(s), different from oxidation dyes. These are colored compounds which will diffuse superficially on the fiber. They can be ionic or non-ionic, i.e. anionic, cationic, neutral or non-ionic.

▪ “chemical oxidizing agent” means an oxidizing agent other than the oxygen in the air.

Unless otherwise indicated, when compounds are mentioned in the present application, we also mean their optical isomers, their geometric isomers, their tautomers, their salts, their solvates such as hydrates, and their mixtures.

The terms “at least one” and “one or more” are synonymous and can be used interchangeably.

The terms “lightening” and “bleaching” are synonymous and can be used interchangeably.

Process

According to a first aspect, the present invention relates to a process for treating keratin fibers as defined above.

According to a preferred embodiment, the process according to the present invention is a process for lightening keratin fibers.

The applicant found, surprisingly, that the process according to the present invention made it possible to obtain effective lightening of keratin fibers with a less yellow and more natural result.

When the color of the keratin fibers treated by the process according to the invention is compared to the color of the keratin fibers treated by processes using lightening compositions known from the state of the art, measured b* values are observed. in the CIE system L* a* b* lower for the process according to the invention than for the processes using lightening compositions known from the state of the art at equivalent intensity level L*.
Furthermore, the process according to the invention is more respectful of the quality of the fibers by minimizing their degradation.

According to a preferred embodiment, the amino alkoxysilane(s) are included in composition (B) .

According to another preferred embodiment, the amino alkoxysilane(s) are included in a distinct composition (A) , the composition (A) being applied to the keratin fibers before the composition (B) .

According to another preferred embodiment, the amino alkoxysilane(s) are included in a distinct composition ( C ) , the composition ( C ) being applied to the keratin fibers after the composition (B) .

Combinations of these different embodiments are also possible.

Amino alkoxysilane(s)

The amino alkoxysilane(s) are present in composition (A) in a total content by weight preferably ranging from 1% to 40% by weight, more preferably ranging from 2% to 35% by weight, even more preferably ranging from 3% at 35% by weight, most preferably ranging from 4% to 10% by weight relative to the total point of composition (A) .

The amino alkoxysilane(s) are present in composition ( B ) in a total content by weight preferably ranging from 1% to 40% by weight, more preferably ranging from 2% to 35% by weight, even more preferably ranging from 3% at 35% by weight, most preferably ranging from 4% to 10% by weight relative to the total point of the composition ( B ) .

The amino alkoxysilane(s) are present in the composition ( C ) in a total content by weight preferably ranging from 1% to 40% by weight, more preferably ranging from 2% to 35% by weight, even more preferably ranging from 3% at 35% by weight, most preferably ranging from 4% to 10% by weight relative to the total point of the composition ( C ) .

The amino alkoxysilane(s) are present in the composition ( B2 ) in a total content by weight preferably ranging from 1% to 40% by weight, more preferably ranging from 2% to 35% by weight, even more preferably ranging from 3% at 35% by weight, most preferably ranging from 4% to 10% by weight relative to the total point of the composition ( B2 ) .

The amino alkoxysilane(s) are chosen from the following compounds of formula (I) and/or their oligomers:

in which :
- Ra represents a hydroxy group (OH), an alkyl group having 1 to 20 carbon atoms, preferably methyl, or an alkoxy group having 1 to 10 carbon atoms, preferably 1 to 6 carbon atoms, in particular an ethoxy group;
- Rb and Rc , identical or different, represent a hydrogen atom, an alkyl group having from 1 to 20 carbon atoms, preferably from 1 to 6 carbon atoms, in particular an ethyl group; it being understood that if Ra does not represent an alkoxy group, then Rb and Rc cannot simultaneously represent a hydrogen atom;
- i designates an integer ranging from 1 to 20, preferably ranging from 1 to 6, in particular from 1 to 3 such as 3.

By “oligomer” is meant the compound(s) comprising at least 2 silicon atoms obtained by oligomerization or polymerization of the compounds of formula (I) .

According to one embodiment, Rb and Rc represent a hydrogen atom and Ra represents an ethoxy group.

According to a preferred embodiment:
- Ra denotes an alkoxy group having from 1 to 10 carbon atoms, preferably from 1 to 6 carbon atoms, more preferably an ethoxy group;
- Rb and Rc independently represent an alkyl group having from 1 to 20 carbon atoms, preferably from 1 to 6 carbon atoms, more preferably an ethyl group.

According to a more preferred embodiment, the aminated alkoxysilane is 3-aminopropyltriethoxysilane (APTES).

Compositions (A) and (C)

According to a preferred embodiment, the composition( HAS ) comprises a total content of coloring agents less than 0.1% by weight, preferably less than 0.01% by weight, more preferably less than 0.001% by weight relative to the total weight of the composition(HAS)and/or composition( VS )comprises a total content of coloring agents less than 0.1% by weight, preferably less than 0.01% by weight, more preferably less than 0.001% by weight relative to the total weight of the composition( VS ).

According to a more preferred embodiment, the composition ( A ) and/or (C) is free of coloring agents.

pH of compositions (A) and (C)

The pH of the compositions ( A ) and/or ( C ) preferably varies from 3.5 to 9.5.

The pH of composition (A) is preferably greater than 7, more preferably ranging from 7 to 10, even more preferably ranging from 7.5 to 9.5.

The pH of the composition ( C ) is preferably less than 7, more preferably ranging from 3 to 7, even more preferably ranging from 3.1 to 6.5, most preferably ranging from 3.5 to 6.

Composition (B)

According to a preferred embodiment, composition (B) comprises:
i) hydrogen peroxide;
ii) one or more compounds chosen from carbonates, bicarbonates and mixtures thereof;
iii) one or more silicates;
iv) optionally one or more coloring agents, preferably chosen from direct dyes, oxidation dyes and mixtures thereof.

Chemical oxidizing agents

The composition(B) comprises i) one or more chemical oxidizing agents chosen from hydrogen peroxide, hydrogen peroxide generating systems other than peroxygenated salts and mixtures thereof.

Hydrogen peroxide generating systems other than peroxygenated salts can be chosen from urea peroxide, polymeric complexes capable of releasing hydrogen peroxide, oxidases and their mixtures.

As an example of polymer complexes capable of releasing hydrogen peroxide, mention may be made of polyvinylpyrrolidone/H ₂ O ₂ in particular in powder form and the other polymer complexes described in US 5,008,093; US 3,376,110 and US 5,183,901.

Oxidases can produce hydrogen peroxide in the presence of a suitable substrate, such as glucose in the case of glucose oxidase or uric acid with uricase.

According to a particular embodiment, hydrogen peroxide and/or the hydrogen peroxide generating system(s) other than peroxygenated salts can be incorporated into the composition according to the invention just before its application to the keratin fibers. The intermediate composition(s) comprising hydrogen peroxide and/or the hydrogen peroxide generating system(s) different from the peroxygenated salts may be called oxidizing compositions and may also contain various additional compounds or various adjuvants conventionally used in compositions for lightening of keratin fibers.

According to a preferred embodiment, composition (B) comprises hydrogen peroxide as a chemical oxidizing agent.

The chemical oxidizing agent(s) are present in composition (B) preferably in a total content ranging from 1% to 12% by weight, more preferably ranging from 3% to 9% by weight, even more preferably ranging from 3.5 % to 8.5% by weight relative to the total weight of composition (B) .

According to a preferred embodiment, the hydrogen peroxide is present in composition (B) in a total content ranging from 1% to 12% by weight, preferably ranging from 3% to 9% by weight, more preferably ranging from 3.5% to 8.5% by weight relative to the total weight of composition (B) .

( Bi ) carbonates and/or systems generators of ( bi ) carbonate s

The composition (B) or (B2) further comprises ii) one or more compounds chosen from carbonates, carbonate generating systems, bicarbonates, bicarbonate generating systems and mixtures thereof.

According to a preferred embodiment, the composition(B) Or(B2)further comprises ii) one or more compounds chosen from carbonates, bicarbonates and mixtures thereof.

According to a more preferred embodiment, the composition(B) Or(B2)further comprises ii) one or more compounds selected from ammonium carbonate, ammonium bicarbonate and mixtures thereof.

The compound(s) ii) are present in the composition (B) or (B2) preferably in a total content ranging from 0.01% to 20% by weight, preferably ranging from 1% to 20% by weight, more preferably ranging from 2% to 20% by weight, even more preferably ranging from 4% to 20% by weight, relative to the total weight of the composition (B) or (B2) .

Carbonate s and/or carbonate generating systems

By "carbonate generating system" we mean a system which generates carbonate in situ, such as carbon dioxide in water or percarbonate in water.

Preferably, the carbonate(s) are chosen from:
- alkali metal carbonates;
- alkaline earth metal carbonates;
- lanthanide carbonates;
- transition metal carbonates;
- bismuth carbonate;
- cadmium carbonate;
- thallium carbonate;
- zinc carbonate;
- the compounds of formula (N ⁺ R ¹ R ² R ³ R ⁴ ) ₂ , CO ₃ ^2- in which R ¹ , R ² , R ³ and R ⁴ independently represent a hydrogen atom or a group (C ₁ -C ₄ )alkyl optionally substituted by a hydroxyl group;
- guanidine carbonate;
- their mixtures.

More preferably, the carbonate(s) are chosen from sodium carbonate, potassium carbonate, cesium carbonate, lithium carbonate, magnesium carbonate, calcium carbonate, barium carbonate, strontium carbonate, cerium carbonate, lanthanum carbonate, yttrium carbonate, copper (II) carbonate, manganese carbonate, nickel carbonate, silver carbonate, zirconium carbonate, bismuth carbonate, cadmium carbonate, thallium carbonate, zinc carbonate, ammonium carbonate, guanidine carbonate, tetraethylammonium carbonate and mixtures thereof.

Even more preferably, the carbonate(s) are chosen from sodium carbonate, potassium carbonate, cesium carbonate, magnesium carbonate, calcium carbonate, cerium carbonate, manganese carbonate, zinc carbonate , ammonium carbonate, guanidine carbonate and mixtures thereof.

Most preferably, the carbonate(s) are chosen from sodium carbonate, potassium carbonate, magnesium carbonate, calcium carbonate, ammonium carbonate and their mixtures.

According to a particularly preferred embodiment, the carbonate included in the composition(B)Or(B2) is ammonium carbonate.

The carbonate(s) and/or the carbonate-generating system(s) are present in the composition(B)Or(B2) preferably in a total content ranging from 0.01% to 20% by weight, more preferably ranging from 1% to 20% by weight, even more preferably ranging from 1% to 15% by weight relative to the total weight of the composition(B) Or(B2).

According to a preferred embodiment, the carbonate(s) are present in the composition(B) Or(B2) in a total content ranging from 0.01% to 20% by weight, preferably ranging from 1% to 20% by weight, more preferably ranging from 1% to 15% by weight relative to the total weight of the composition(B) Or(B2).

According to a preferred embodiment, the compound(s) ii) are chosen from carbonates, carbonate-generating systems and mixtures thereof, preferably from carbonates.

Bic arbonate s and/or generating systems bi carbonates

By "bicarbonate generating system" we mean a system which generates bicarbonate in situ, for example carbon dioxide in water or by buffering a carbonate with a mineral or organic acid.

Preferably, the bicarbonate(s) are chosen from:
- alkali metal bicarbonates;
- alkaline earth metal bicarbonates;
- the compounds of formula N ⁺ R ¹ R ² R ³ R ⁴ , HCO ₃ ^- in which R ¹ , R ² , R ³ and R ⁴ independently represent a hydrogen atom or a group (C ₁ - C ₄ ) alkyl optionally substituted by a hydroxyl group;
- aminoguanidine bicarbonate;
- their mixtures.

More preferably, the bicarbonate(s) are chosen from sodium bicarbonate, potassium bicarbonate, lithium bicarbonate, cesium bicarbonate, calcium bicarbonate, magnesium bicarbonate, ammonium bicarbonate, choline bicarbonate , triethylammonium bicarbonate, aminoguanidine bicarbonate and mixtures thereof.

Even more preferably, the bicarbonate(s) are chosen from sodium bicarbonate, potassium bicarbonate, cesium bicarbonate, calcium bicarbonate, magnesium bicarbonate, ammonium bicarbonate and their mixtures.

Most preferably, the bicarbonate(s) are chosen from sodium bicarbonate, potassium bicarbonate, ammonium bicarbonate and mixtures thereof.

According to a particularly preferred embodiment, the bicarbonate included in the composition(B)Or(B2) is ammonium bicarbonate.

The bicarbonates can come from natural water, for example spring water from the Vichy basin, from La Roche Posay, water from Badoit.

The bicarbonate(s) and/or the bicarbonate-generating system(s) are present in the composition(B) Or(B2)preferably in a total content ranging from 0.01% to 20% by weight, more preferably ranging from 1% to 20% by weight, even more preferably ranging from 2% to 20% by weight, most preferably ranging from 4% at 20% by weight relative to the total weight of the composition(B) Or(B2).

According to a preferred embodiment, the bicarbonate(s) are present in a total content ranging from 0.01% to 20% by weight, preferably ranging from 1% to 20% by weight, more preferably ranging from 2% to 20% by weight, even more preferably ranging from 4% to 20% by weight relative to the total weight of the composition(B) Or(B2).

According to a preferred embodiment, the compound(s) ii) are chosen from bicarbonates, bicarbonate generating systems and mixtures thereof, preferably from bicarbonates.

Silicates

The composition(B)Or(B2) further comprises iii) one or more silicates.

The silicate(s) are preferably water-soluble.

By "water-soluble silicate" is meant a silicate which has a solubility in water at ordinary room temperature (25°C) and at atmospheric pressure (760 mm Hg) greater than 0.5% by weight, preferably greater than 1 % in weight.

Preferably, the silicate(s) are chosen from alkali metal silicates, alkaline earth metal silicates, aluminum silicates, trimethylammonium silicates and mixtures thereof.

More preferably, the silicate(s) are chosen from sodium silicates, potassium silicates, calcium silicates, aluminum silicates, trimethylammonium silicates and mixtures thereof.

Even more preferably, the silicate(s) are chosen from sodium silicates.

Preferably, the silicate(s) are chosen from the compounds having the INCI name Sodium Silicate (CAS: [1344-09-8]) and/or Sodium Metasilicate (CAS: [6834-92-0]).

The silicate(s) are present in the composition(B)Or(B2) preferably in a total content ranging from 1% to 40% by weight, more preferably ranging from 2% to 35% by weight, even more preferably ranging from 3% to 35% by weight, most preferably ranging from 4% to 20 % by weight relative to the total weight of the composition(B) Or(B2).

The weight ratio of total quantity of carbonate(s) and/or carbonate(s)-generating system(s) / total quantity of silicate(s) in the composition(B)Or(B2) is preferably from 0.00025 to 20, more preferably from 0.028 to 10, even more preferably from 0.028 to 3.4.

According to a preferred embodiment, the weight ratio total quantity of carbonate(s) / total quantity of silicate(s) in the composition(B)Or(B2) is 0.00025 to 20, preferably 0.028 to 10, more preferably 0.028 to 3.4.

The weight ratio of total quantity of carbonate(s) and/or carbonate-generating system(s) / total quantity of chemical oxidizing agent(s) in the composition(B) Or(B2)is preferably from 0.0008 to 20, more preferably from 0.1 to 6.6, even more preferably from 0.1 to 2.9.

According to a preferred embodiment, the weight ratio total quantity of carbonate(s) / total quantity of chemical oxidizing agent(s) in the composition(B) Or(B2)is from 0.0008 to 20, preferably from 0.1 to 6.6, more preferably from 0.1 to 2.9.

According to a preferred embodiment, the weight ratio total quantity of carbonate(s) / total quantity of hydrogen peroxide in the composition(B)Or(B2) is from 0.0008 to 20, preferably from 0.1 to 6.6, more preferably from 0.1 to 2.9.

The weight ratio of total quantity of bicarbonate(s) and/or system(s) generating bicarbonate(s) / total quantity of silicate(s) in the composition(B) Or(B2)is preferably from 0.00025 to 20, more preferably from 0.02 to 7.5, even more preferably from 0.05 to 5.

According to a preferred embodiment, the weight ratio total quantity of bicarbonate(s) / total quantity of silicate(s) in the composition(B) Or(B2)is from 0.00025 to 20, preferably from 0.02 to 7.5, more preferably from 0.05 to 5.

According to a preferred embodiment, the weight ratio total quantity of ammonium bicarbonate / total quantity of silicate(s) in the composition(B)Or(B2) is from 0.00025 to 20, preferably from 0.02 to 7.5, more preferably from 0.05 to 5.

The weight ratio of total quantity of bicarbonate(s) and/or bicarbonate-generating system(s) / total quantity of chemical oxidizing agent(s) in the composition(B) Or(B2)is preferably from 0.0008 to 20, more preferably from 0.11 to 5, even more preferably from 0.2 to 4.2.

According to a preferred embodiment, the weight ratio total quantity of bicarbonate(s) / total quantity of chemical oxidizing agent(s) in the composition(B) Or(B2) is from 0.0008 to 20, preferably from 0.11 to 5, more preferably from 0.2 to 4.2.

According to a more preferred embodiment, the weight ratio total quantity of bicarbonate(s) / total quantity of hydrogen peroxide in the composition(B)Or(B2) is from 0.0008 to 20, preferably from 0.11 to 5, more preferably from 0.2 to 4.2.

According to a more preferred embodiment, the weight ratio total quantity of ammonium bicarbonate / total quantity of chemical oxidizing agent(s) in the composition(B)Or(B2) is from 0.0008 to 20, preferably from 0.11 to 5, more preferably from 0.2 to 4.2.

According to a more preferred embodiment, the weight ratio total quantity of ammonium bicarbonate / total quantity of hydrogen peroxide in the composition(B)Or(B2) is from 0.0008 to 20, preferably from 0.11 to 5, more preferably from 0.2 to 4.2.

The weight ratio of total quantity of carbonate(s) and/or carbonate-generating system(s) / total quantity of bicarbonate(s) and/or bicarbonate-generating system(s) in the composition(B) Or(B2) is preferably from 0.0005 to 2000, more preferably from 0.06 to 20, even more preferably from 0.06 to 5.

According to a preferred embodiment, the weight ratio total quantity of carbonate(s) / total quantity of bicarbonate(s) in the composition(B) Or(B2) is from 0.0005 to 2000, preferably from 0.06 to 20, more preferably from 0.06 to 5.

The composition(B)Or(B2) preferably comprises a total magnesium carbonate content of less than 5% by weight, more preferably less than 1% by weight, even more preferably less than 0.1% by weight, most preferably less than 0.01% by weight, and better less than 0.001% by weight.

According to a particularly preferred embodiment, the composition is free of magnesium carbonate.

The composition(B)Or(B2) preferably comprises a total persulfate content of less than 10% by weight, more preferably less than 5% by weight, even more preferably less than 1% by weight, most preferably less than 0.1% by weight, and better still less than 0.01% by weight, and even better less than 0.001% by weight.

According to a particularly preferred embodiment, the composition(B)Or(B2) is free of persulfates.

According to a particular embodiment, the composition(B)Or(B2) further comprises iv) one or more coloring agents, preferably chosen from direct dyes, oxidation dyes and mixtures thereof.

According to this particular embodiment, the process according to the invention is a process for simultaneous bleaching and coloring of keratin fibers.

When present in composition (B) or in composition (B2) and/or (A) and/or (C) , the coloring agent(s) are present in the composition preferably in a total content ranging from 0.001 % to 10% by weight, more preferably ranging from 0.01% to 4% by weight, even more preferably ranging from 0.1% to 1% by weight, relative to the total weight of the composition comprising it or them.

Oxidation dyes

Oxidation dyes are generally chosen from one or more oxidation bases, possibly combined with one or more coupling agents (also called couplers).

Oxidation bases

The composition(B)Or(B2)and/or composition(HAS)and or(VS) may optionally comprise one or more oxidation bases advantageously chosen from those traditionally used in the coloring of keratin fibers.

For example, the oxidation bases are chosen from para-phenylenediamines, bis(phenyl)alkylenediamines, para-aminophenols, ortho-aminophenols and heterocyclic bases and the corresponding addition salts.

Among the para-phenylenediamines which may be mentioned, we find for example para-phenylenediamine, para-toluenediamine, 2-chloro-para-phenylenediamine, 2,3-dimethyl-para-phenylenediamine, 2,6-dimethyl -para-phenylenediamine, 2,6-diethyl-para-phenylenediamine, 2,5-dimethyl-para-phenylenediamine, N,N-dimethyl-para-phenylenediamine, N,N-diethyl-para-phenylenediamine, N,N-dipropyl-para-phenylenediamine, 4-amino-N,N-diethyl-3-methylaniline, N,N-bis(β-hydroxyethyl)-para-phenylenediamine, 4-N,N-bis( β-hydroxyethyl)amino-2-methylaniline, 4-N,N-bis(ß-hydroxyethyl)amino-2-chloroaniline, 2-β-hydroxyethyl- para -phenylenediamine, 2-methoxymethyl-para-phenylenediamine, 2 -fluoro-para-phenylenediamine, 2-isopropyl-para-phenylenediamine, N-(β-hydroxypropyl)-para-phenylenediamine, 2-hydroxymethyl-para-phenylenediamine, N,N-dimethyl-3-methyl-para -phenylenediamine, N-ethyl-N-(β-hydroxyethyl)-para-phenylenediamine, N-(β,γ-dihydroxypropyl)-para-phenylenediamine, N-(4'-aminophenyl)-para-phenylenediamine, N-phenyl-para-phenylenediamine, 2-β-hydroxyethyloxy-para-phenylenediamine, 2-β-acetylaminoethyloxy-para-phenylenediamine, N-(β-methoxyethyl)-para-phenylenediamine, 4-aminophenylpyrrolidine, 2 -thienyl-para-phenylenediamine, 2-β-hydroxyethylamino-5-aminotoluene and 3-hydroxy-1-(4'-aminophenyl)pyrrolidine and the corresponding addition salts with an acid.

Among the aforementioned para-phenylenediamines, para-phenylenediamine, para-toluenediamine, 2-isopropyl-para-phenylenediamine, 2-β-hydroxyethyl-para-phenylenediamine, 2-β-hydroxyethyloxy-para- are particularly preferred. phenylenediamine, 2,6-dimethyl-para-phenylenediamine, 2,6-diethyl-para-phenylenediamine, 2,3-dimethyl-para-phenylenediamine, N,N-bis(β-hydroxyethyl)-para-phenylenediamine , 2-chloro-para-phenylenediamine and 2-β-acetylaminoethyloxy-para-phenylenediamine and the corresponding addition salts with an acid.

Among the bis(phenyl)alkylenediamines which may be mentioned, we find for example N,N'-bis(β-hydroxyethyl)-N,N'-bis(4'-aminophenyl)-1,3-diaminopropanol, N ,N'-bis(β-hydroxyethyl)-N,N'-bis(4'-aminophenyl)ethylenediamine, N,N'-bis(4-aminophenyl)tetramethylenediamine, N,N'-bis(β-hydroxyethyl) )-N,N'-bis(4-aminophenyl)tetramethylenediamine, N,N'-bis(4-methylaminophenyl)tetramethylenediamine, N,N'-bis(ethyl)-N,N'-bis(4'- amino-3'-methylphenyl)ethylenediamine and 1,8-bis(2,5-diaminophenoxy)-3,6-dioxaoctane and the corresponding addition salts.

Among the para-aminophenols which are mentioned, we find for example para-aminophenol, 4-amino-3-methylphenol, 4-amino-3-fluorophenol, 4-amino-3-chlorophenol, 4-amino- 3-hydroxymethylphenol, 4-amino-2-methylphenol, 4-amino-2-hydroxymethylphenol, 4-amino-2-methoxymethylphenol, 4-amino-2-aminomethylphenol, 4-amino-2-(β- hydroxyethylaminomethyl)phenol and 4-amino-2-fluorophenol and the corresponding addition salts with an acid.

Among the ortho-aminophenols which may be mentioned, we find for example 2-aminophenol, 2-amino-5-methylphenol, 2-amino-6-methylphenol and 5-acetamido-2-aminophenol and the salts of corresponding addition.

Among the heterocyclic bases which may be mentioned, we find, for example, pyridine, pyrimidine and pyrazole derivatives.

Among the pyridine derivatives which may be mentioned, we find the compounds for example described in patents GB 1,026,978 and GB 1,153,196, for example 2,5-diaminopyridine, 2-(4-methoxyphenyl)amino-3 -aminopyridine and 3,4-diaminopyridine and the corresponding addition salts.

Other pyridine oxidation bases which are useful in the present invention are the 3-aminopyrazolo[1,5-a]pyridine oxidation bases or the corresponding addition salts described, for example, in the application patent FR 2 801 308. Examples which may be mentioned include pyrazolo[1,5-a]pyrid-3-ylamine, 2-acetylaminopyrazolo[1,5-a]pyrid-3-ylamine, 2-morpholin- 4-ylpyrazolo[1,5-a]pyrid-3-ylamine, 3-aminopyrazolo[1,5-a]pyridine-2-carboxylic acid, 2-methoxypyrazolo[1,5-a]pyrid-3- ylamine, (3-aminopyrazolo[1,5-a]pyrid-7-yl)methanol, 2-(3-aminopyrazolo[1,5-a]pyrid-5-yl)ethanol, 2-(3- aminopyrazolo[1,5-a]pyrid-7-yl)ethanol, (3-aminopyrazolo[1,5-a]pyrid-2-yl)methanol, 3,6-diaminopyrazolo[1,5-a]pyridine , 3,4-diaminopyrazolo[1,5-a]pyridine, pyrazolo[1,5-a]pyridine-3,7-diamine, 7-morpholin-4-ylpyrazolo[1,5-a]pyrid- 3-ylamine, pyrazolo[1,5-a]pyridine-3,5-diamine, 5-morpholin-4-ylpyrazolo[1,5-a]pyrid-3-ylamine, 2-[(3-aminopyrazolo [1,5-a]pyrid-5-yl)(2-hydroxyethyl)-amino]ethanol, 2-[(3-aminopyrazolo[1,5-a]pyrid-7-yl)(2-hydroxyethyl)amino ]ethanol, 3-aminopyrazolo[1,5-a]pyridin-5-ol, 3-aminopyrazolo[1,5-a]pyridin-4-ol, 3-aminopyrazolo[1,5-a]pyridin- 6-ol, 3-aminopyrazolo[1,5-a]pyridin-7-ol, 2-β-hydroxyethoxy-3-amino-pyrazolo[1,5-a]pyridine; 2-(4-dimethylpiperazinium-1-yl)-3-amino-pyrazolo[1,5-a]pyridine; and the corresponding addition salts.

More particularly, the oxidation bases which are useful in the present invention are chosen from 3-aminopyrazolo-[1,5-a]-pyridines and preferably substituted on the carbon atom 2 by:
a) a (di)(C ₁ -C ₆ )(alkyl)amino group, said alkyl group being able to be substituted by at least one hydroxy, amino, imidazolium group;
b) a heterocycloalkyl group containing 5 to 7 members and 1 to 3 heteroatoms, optionally cationic, optionally substituted by one or more (C ₁ -C ₆ ) alkyl groups, such as a di(C ₁ -C ₄ ) alkylpiperazinium group; Or
c) a (C ₁ -C ₆ )alkoxy group optionally substituted by one or more hydroxy groups such as a β-hydroxyalkoxy group and the corresponding addition salts.

Among the pyrimidine derivatives which may be mentioned are the compounds described, for example, in patents DE 2359399; JP 88-169571; JP 05-63124; EP 0770375 or patent application WO 96/15765, such as 2,4,5,6-tetraaminopyrimidine, 4-hydroxy-2,5,6-triaminopyrimidine, 2-hydroxy-4,5,6-triaminopyrimidine , 2,4-dihydroxy-5,6-diaminopyrimidine, 2,5,6-triaminopyrimidine and their addition salts and their tautomeric forms, when a tautomeric equilibrium exists.

Among the pyrazole derivatives which may be mentioned are the compounds described in patents DE 3843892, DE 4133957 and patent applications WO 94/08969, WO 94/08970, FRA-2 733 749 and DE 195 43 988, such as 4,5-diamino-1-methylpyrazole, 4,5-diamino-1-(β-hydroxyethyl)pyrazole, 3,4-diaminopyrazole, 4,5-diamino-1-(4'-chlorobenzyl) pyrazole, 4,5-diamino-1,3-dimethylpyrazole, 4,5-diamino-3-methyl-1-phenylpyrazole, 4,5-diamino-1-methyl-3-phenylpyrazole, 4-amino- 1,3-dimethyl-5-hydrazinopyrazole, 1-benzyl-4,5-diamino-3-methylpyrazole, 4,5-diamino-3- tert -butyl-1-methylpyrazole, 4,5-diamino-1 - tert -butyl-3-methylpyrazole, 4,5-diamino-1-(β-hydroxyethyl)-3-methylpyrazole, 4,5-diamino-1-ethyl-3-methylpyrazole, 4,5-diamino- 1-ethyl-3-(4'-methoxyphenyl)pyrazole, 4,5-diamino-1-ethyl-3-hydroxymethylpyrazole, 4,5-diamino-3-hydroxymethyl-1-methylpyrazole, 4,5-diamino -3-hydroxymethyl-1-isopropylpyrazole, 4,5-diamino-3-methyl-1-isopropylpyrazole, 4-amino-5-(2'-aminoethyl)amino-1,3-dimethylpyrazole, 3,4, 5-triaminopyrazole, 1-methyl-3,4,5-triaminopyrazole, 3,5-diamino-1-methyl-4-methylaminopyrazole, 3,5-diamino-4-(β-hydroxyethyl)amino-1- methylpyrazole and the corresponding addition salts. 4,5-diamino-1-(β-methoxyethyl)pyrazole can also be used.

A 4,5-diaminopyrazole will preferably be used and even more preferably 4,5-diamino-1-(β-hydroxyethyl)pyrazole and/or a corresponding salt.

The pyrazole derivatives which may also be mentioned include diamino-N,N-dihydropyrazolopyrazolones and in particular those described in patent application FR-A-2 886 136, such as the following compounds and the corresponding addition salts: 2,3-diamino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one, 2-amino-3-ethylamino-6,7-dihydro-1H,5H-pyrazolo [1,2-a]pyrazol-1-one, 2-amino-3-isopropylamino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one, 2-amino -3-(pyrrolidin-1-yl)-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one, 4,5-diamino-1,2-dimethyl-1, 2-dihydropyrazol-3-one, 4,5-diamino-1,2-diethyl-1,2-dihydropyrazol-3-one, 4,5-diamino-1,2-di-(2-hydroxyethyl)- 1,2-dihydropyrazol-3-one, 2-amino-3-(2-hydroxyethyl)amino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one, 2 -amino-3-dimethylamino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one, 2,3-diamino-5,6,7,8-tetrahydro-1H, 6H-pyridazino[1,2-a]pyrazol-1-one, 4-amino-1,2-diethyl-5-(pyrrolidin-1-yl)-1,2-dihydropyrazol-3-one, 4- amino-5-(3-dimethylaminopyrrolidin-1-yl)-1,2-diethyl-1,2-dihydropyrazol-3-one, 2,3-diamino-6-hydroxy-6,7-dihydro-1H,5H -pyrazolo[1,2-a]pyrazol-1-one.

We will preferably use 2,3-diamino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one and/or a corresponding salt.

We will preferably use 4,5-diamino-1-(β-hydroxyethyl)pyrazole and/or 2,3-diamino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1 -one and/or a corresponding salt as heterocyclic bases.

Coupling agents

The composition(B)Or(B2)and/or composition(HAS)and or(VS) may optionally comprise one or more coupling agents advantageously chosen from those traditionally used in the coloring of keratin fibers.

Among these coupling agents, mention may in particular be made of meta-phenylenediamines, meta-aminophenols, meta-diphenols, naphthalene-based coupling agents and heterocyclic coupling agents as well as the corresponding addition salts.

We can for example mention 1,3-dihydroxybenzene, 1,3-dihydroxy-2-methylbenzene, 4-chloro-1,3-dihydroxybenzene, 2,4-diamino-1-(ß-hydroxyethyloxy)benzene, 2-amino-4-(ß-hydroxyethylamino)-1-methoxybenzene, 1,3-diaminobenzene, 1,3-bis(2,4-diaminophenoxy)propane, 3-ureidoaniline, 3-ureido-1 -dimethylaminobenzene, sesamol, 1-ß-hydroxyethylamino-3,4-methylenedioxybenzene, α-naphthol, 2-methyl-1-naphthol, 6-hydroxyindole, 4-hydroxyindole, 4-hydroxy-N -methylindole, 2-amino-3-hydroxypyridine, 6-hydroxybenzomorpholine, 3,5-diamino-2,6-dimethoxypyridine, 1-N-(ß-hydroxyethyl)amino-3,4-methylenedioxybenzene, 2 ,6-bis(ß-hydroxyethylamino)toluene, 6-hydroxyindoline, 2,6-dihydroxy-4-methylpyridine, 1-H-3-methylpyrazol-5-one, 1-phenyl-3-methylpyrazol-5 -one, 2,6-dimethylpyrazolo[1,5-b]-1,2,4-triazole, 2,6-dimethyl[3,2-c]-1,2,4-triazole and 6- methylpyrazolo[1,5-a]benzimidazole, 2-methyl-5-aminophenol, 5-N-(ß–hydroxyethyl)amino-2-methylphenol, 3-aminophenol, 3-amino-2-chloro-6 -methylphenol, the corresponding addition salts with an acid and the corresponding mixtures.

In general, the addition salts of oxidation bases and coupling agents which can be used in the context of the invention are in particular chosen from addition salts with an acid, such as hydrochlorides, hydrobromides, sulfates, citrates, succinates, tartrates, lactates, tosylates, benzenesulfonates, phosphates and acetates.

The oxidation base(s) each advantageously represent 0.001% to 10% by weight relative to the total weight of the composition and preferably 0.005% to 5% by weight relative to the total weight of the composition. understanding them.

The coupling agent(s), if present, each advantageously represents 0.001% to 10% by weight relative to the total weight of the composition comprising them and preferably 0.005% to 5% by weight per relative to the total weight of the composition comprising them.

Direct dyes

The composition(B)Or(B2)and/or composition(HAS)and or(VS) may further comprise one or more direct dyes.

The direct synthetic dyes that can be used are for example chosen from those conventionally used in direct coloring, and among which we can cite all the aromatic and/or non-aromatic dyes in common use such as the nitrated benzene, azo, hydrazono, nitrated direct dyes. (hetero)aryl, tri(hetero)arylmethane, (poly)methinic, carbonyl, azinic, porphyrinic, metalloporphyrinic, quinonic and in particular anthraquinonic, indoamine, phthalocyanic and their mixtures.

Among the nitrated benzene direct dyes, mention may be made of: 1,4-diamino-2-nitrobenzene, 1-amino-2 nitro-4-b-hydroxyethylaminobenzene; 1-amino-2 nitro-4-bis(β-hydroxyethyl)-aminobenzene; 1,4-bis(b-hydroxyethylamino)-2-nitrobenzene; 1-b-hydroxyethylamino-2-nitro-4-bis-(β-hydroxyethylamino)-benzene; 1-b-hydroxyethylamino-2-nitro-4-aminobenzene; 1-β-hydroxyethylamino-2-nitro-4-(ethyl)(b-hydroxyethyl)-aminobenzene; 1-amino-3-methyl-4-β-hydroxyethylamino-6-nitrobenzene; 1-amino-2-nitro-4-β-hydroxyethylamino-5-chlorobenzene; 1,2-diamino-4-nitrobenzene; 1-amino-2-β-hydroxyethylamino-5-nitrobenzene; 1,2-bis-(β-hydroxyethylamino)-4-nitrobenzene; 1-amino-2-tris-(hydroxymethyl)-methylamino-5-nitrobenzene; 1-Hydroxy-2-amino-5-nitrobenzene; 1-Hydroxy-2-amino-4-nitrobenzene; 1-Hydroxy-3-nitro-4-aminobenzene; 1-Hydroxy-2-amino-4,6-dinitrobenzene; 1-β-hydroxyethyloxy-2-β-hydroxyethylamino-5-nitrobenzene; 1-Methoxy-2-β-hydroxyethylamino-5-nitrobenzene; 1-β-hydroxyethyloxy-3-methylamino-4-nitrobenzene; 1-β,γ-dihydroxypropyloxy-3-methylamino-4-nitrobenzene; 1-β-hydroxyethylamino-4-β,γ-dihydroxypropyloxy-2-nitrobenzene; 1-β,γ-dihydroxypropylamino-4-trifluoromethyl-2-nitrobenzene; 1-β-hydroxyethylamino-4-trifluoromethyl-2-nitrobenzene; 1-β-hydroxyethylamino-3-methyl-2-nitrobenzene; 1-β-aminoethylamino-5-methoxy-2-nitrobenzene; 1-Hydroxy-2-chloro-6-ethylamino-4-nitrobenzene; 1-Hydroxy-2-chloro-6-amino-4-nitrobenzene; 1-Hydroxy-6-bis-(β-hydroxyethyl)-amino-3-nitrobenzene; 1-β-hydroxyethylamino-2-nitrobenzene; 1-Hydroxy-4-β-hydroxyethylamino-3-nitrobenzene.

Among the azo direct dyes, we can cite: Basic Red 51, Basic Orange 31, Disperse Red 17, Acid Yellow 9, Acid Black 1, Basic Red 22, Basic Red 76, Basic Yellow 57, Acid Yellow 36, Acid Orange 7, Acid Red 33, Acid Red 35, Acid Yellow 23, Acid Orange 24, Disperse Black 9, Basic Brown 16, Basic Brown 17.

Hydrazono direct dyes include: Basic Yellow 87.

Among the direct aryl nitrate dyes, we can cite: HC Blue 2, HC Yellow 2, HC Red 3, 4-hydroxypropylamino-3-nitrophenol, N,N’-bis-(2-hydroxyethyl)-2-nitro-phenylenediamine.

Among the triarylmethane direct dyes, we can cite: Basic Violet 1, Basic Violet 2, Basic Violet 3, Basic Violet 4, Basic Violet 14, Basic Blue 1, Basic Blue 7, Basic Blue 26, Basic green 1, Basic Blue 77 ( also called HC Blue 15), Acid Blue 1; Acid Blue 3; Acid Blue 7, Acid Blue 9; Acid Violet 49; Acid green 3; Acid green 5; Acid Green 50.

Quinonic direct dyes include: Disperse Red 15, Solvent Violet 13, Acid Violet 43, Disperse Violet 1, Disperse Violet 4, Disperse Blue 1, Disperse Violet 8, Disperse Blue 3, Disperse Red 11, Acid Blue 62, Disperse Blue 7, Basic Blue 22, Disperse Violet 15, Basic Blue 99, as well as the following compounds: 1-N-methylmorpholiniumpropylamino-4-hydroxyanthraquinone, 1-aminopropylamino-4-methylaminoanthraquinone, 1-aminopropylamino-anthraquinone, 5-β-hydroxyethyl-1,4-diaminoanthraquinone, 2-aminoethylamino-anthraquinone, 1,4-bis-(β,γ-dihydroxypropylamino)-anthraquinone, Acid Blue 25, Acid Blue 43, Acid Blue 78, Acid Blue 129, Acid Blue 138, Acid Blue 140, Acid Blue 251, Acid Green 25, Acid Green 41, Acid Violet 42, Mordant Red 3, Acid Black 48, HC Blue 16.

Among the direct azinic dyes, we can cite: Basic Blue 17, Basic Red 2.

Among the direct indoamine dyes, we can cite: 2-β-hydroxyethylamino-5-[bis-(β-4'-hydroxyethyl)amino]anilino-1,4-benzoquinone, 2-β-hydroxyethylamino-5-(2' -methoxy-4'-amino)anilino-1,4-benzoquinone, 3-N(2'-chloro-4'-hydroxy)phenyl-acetylamino-6-methoxy-1,4-benzoquinone imine, 3-N(3 '-chloro-4'-methylamino)phenyl-ureido-6-methyl-1,4-benzoquinone imine, 3-[4'-N-(ethyl,carbamylmethyl)-amino]-phenyl-ureido-6-methyl-1 ,4-benzoquinone imine.

The natural direct dyes which can be used are for example chosen from lawsone, juglone, indigo, leuco indigo, indirubin, isatin, hennotannic acid, alizarin, carthamine, morin, purpurin, carminic acid, kermesic acid, laccaic acid purpurogalline, protocatechaldehyde, curcumin, spinulosin, apigenidin, orceins, carotenoids, betanin, chlorophylls, chlorophyllins, monascus, polyphenols or orthodiphenols.

Among the useful orthodiphenols according to the invention, mention may be made of: catechin, quercetin, brazilin, hematein, hematoxylin, chlorogenic acid, caffeic acid, gallic acid, L DOPA, cyanidin, (-)-Epicatechin, (-)-Epigallocatechin, (-) )-Epigallocatechin 3-gallate (EGCG), Isoquercetin, Pomiferin, esculetin, 6,7-Dihydroxy-3-(3-hydroxy-2,4-dimethoxyphenyl)coumarin, Santalin A and B, mangiferin, butein, Maritimetine, Sulfuretin, Robtein, Betanidine, Pericampylinone A., Theaflavin, Proanthocyanidin A2, Proanthocyanidin B2, Proanthocyanidin C1, Procyanidins DP 4-8, Tannic acid, Purpurogallin, 5,6-Dihydroxy-2-methyl-1,4-naphthoquinone, Alizarin, Wedelolactone and natural extracts containing them.

The direct dye(s) may be present in the composition (B) or (B2) and/or the composition (A) and/or (C) in a total content ranging from 0.001% to 5% by weight, preferably 0 .01% to 3% by weight, more preferably from 0.1% to 1% by weight, even more preferably from 0.1% to 0.8% by weight relative to the total weight of the composition comprising it or them.

According to a preferred embodiment, the composition(B)Or(B2)and/or composition(HAS)and or(VS) comprises a total content of coloring agents less than 0.1% by weight, preferably less than 0.01% by weight, more preferably less than 0.001% by weight relative to the total weight of the composition comprising them.

According to a more preferred embodiment, the composition(B) Or(B2)is free of coloring agents.

According to a more preferred embodiment, composition ( A ) is free of coloring agents.

According to a more preferred embodiment, the composition ( C ) is free of coloring agents.

pH of the composition (B)

Composition (B) preferably has a pH less than or equal to 11, preferably less than or equal to 10.5, preferably less than or equal to 10.

The pH of composition (B) can vary from 8 to 11, preferably from 8 to 10.5, more preferably from 8 to 10.

According to a particularly preferred embodiment, the pH of the composition (B) according to the invention varies from 8.3 to 10.

Compositions (A), (B) and/or (C) Alkalizing agents

Compositions (A) and/or (B) and/or (C) may further comprise one or more alkalizing agents other than carbonates, bicarbonates and silicates as defined above.

The alkalizing agent(s) may be mineral or organic. They can be chosen from i) ammonia, ii) alkanolamines such as mono-, di- and triethanolamines as well as their derivatives iii) oxyethylenated and/or oxypropylenated ethylenediamines, iv) mineral or organic hydroxides, v) preferably basic amino acids such as arginine, lysine, ornithine, citruline and histidine, and vi) the compounds of formula (II) following:

in which :
- W is a divalent (C ₁ -C ₈ ) alkylene group, preferably propylene, optionally substituted in particular by a hydroxy group or a C ₁ -C ₄ alkyl radical;
- R _a , R _b , R _c and R _d , identical or different, represent a hydrogen atom, a C ₁ -C ₄ alkyl or C ₁ -C ₄ hydroxyalkyl radical;
vii) and their mixtures.

The mineral or organic hydroxides are preferably chosen from i) the hydroxides of alkali metals such as sodium or potassium hydroxides, ii) the hydroxides of alkaline earth metals, iii) the hydroxides of transition metals, such as the hydroxides of metals of groups III, IV, V and VI, iv) the hydroxides of lanthanides or actinides.

When present, the alkalizing agent(s) other than carbonates, bicarbonates and silicates as defined above preferably represent from 0.001% to 20% by weight, more particularly from 0.005% to 16% relative to the total weight of composition (A) or (B) or (C) .

According to a preferred embodiment, the compositions(HAS)and or(B)and or(VS) do not include an alkalizing agent chosen from ammonia and/or alkanolamines.

Acidifying agents

The essays(HAS)and or(B)and or(VS) may further comprise one or more acidifying agents.

Among the acidifying agents, mention may be made, by way of example, of mineral acids such as hydrochloric acid, (ortho)phosphoric acid, boric acid, nitric acid, sulfuric acid or organic acids such as, for example, compounds comprising at least one carboxylic acid function such as acetic acid, tartaric acid, citric acid, lactic acid, a sulfonic acid function, a phosphonic acid function or a phosphoric acid function.

According to a particular embodiment, the compositions(HAS)and or(B)and or(VS) do not include an acidifying agent.

According to a particular embodiment, the compositions(HAS)and or(VS) comprise at least one acidifying agent.

Sequestrants

The essays(HAS)and or(B)and or(VS) may possibly include one or more sequestrants. As examples of sequestrants which can be used in the present invention, mention may be made of N,N-dicarboxymethyl L-glutamic acid and tetrasodium N,N-bis(carboxymethyl)-L-glutamate.

Other features compositions (HAS) , (B) and or (VS)

The essays(HAS)and or(B)and or(VS) preferably comprise water in a content ranging from 5% to 99% by weight, more preferably ranging from 5% to 80% by weight relative to the total weight of the composition.

According to a preferred embodiment, at least one of the compositions (A) , (B) or (C) comprises water.

The essays(HAS)and or(B)and or(VS) may further comprise at least one organic solvent.

By “organic solvent” we mean an organic substance capable of dissolving another substance without chemically modifying it.

As an organic solvent, mention may for example be made of lower C ₂ -C ₄ alkanols, such as ethanol and isopropanol; polyols and polyol ethers such as 2-butoxyethanol, propylene glycol, propylene glycol monomethyl ether, diethylene glycol monoethyl ether and monomethyl ether, as well as aromatic alcohols such as benzyl alcohol or phenoxyethanol, and mixtures thereof.

The organic solvents are present in proportions preferably ranging from 0.1% to 40% by weight, more preferably from 1% to 30% by weight, even more preferably from 1% to 25% by weight relative to the total weight of composition (A) or (B) or (C) .

The essays(HAS)and or(B)and or(VS) can be in liquid form, in the form of a serum, in thickened form, in particular a gel, a cream, a wax, a paste, or in the form of a foam.

The essays(HAS)and or(B)and or(VS) may further comprise one or more additional compounds chosen from nonionic, anionic, cationic or amphoteric surfactants, thickening polymers of natural or synthetic origin, cationic, anionic, nonionic or zwitterionic, associative or nonassociative, silicones in the form oil, gums or resins or non-silicone vegetable, mineral or synthetic oils, UV filters, fillers, such as nacres and metal oxides such as titanium dioxides, clays, perfumes, agents peptisants, vitamins and preservatives.

Additional process characteristics treatment

According to a preferred embodiment, the process according to the present invention is a process for lightening keratin fibers.

Preferably, the keratin fibers treated according to the process of the present invention are dark keratin fibers.

By “dark keratin fibers” is meant keratin fibers whose pitch height (HT) is less than or equal to 6 (dark blonde), preferably less than or equal to 4 (chestnut).

The method according to the present invention makes it possible to obtain a lightening of the keratin fibers characterized by a lower value of b*, preferably lower by 10%, more preferably lower by 15%, than the value of b* measured at the same level of intensity L* on keratin fibers lightened using a composition comprising one or more persulfates, the values of b* and L* being measured in the CIE L*a*b* system.

Preferably, the values of b* and L* are measured according to the color evaluation method described in the examples.

Composition (A)

Composition (A) is applied to dry or wet keratin fibers, preferably to dry keratin fibers.

Composition (A) is applied to the keratin fibers in a quantity preferably ranging from 0.1g to 20g, more preferably ranging from 0.2g to 10g of composition (A) per gram of keratin fibers.

Composition (A) is left to sit on the keratin fibers for a duration preferably ranging from 5 seconds to 30 minutes. For example, composition (A) is left on the keratin fibers for 5 minutes.

The application temperature of composition (A) is conventionally between room temperature (between 15 to 25°C) and 70°C.

According to a preferred embodiment, composition (A) is applied at room temperature (between 15 to 25°C).

Composition (A) can be left on the fibers under an occlusive system. As a non-limiting example of an occlusive system, we can cite an occlusive system of the aluminum foil or plastic film or charlotte type with or without holes.

After application of composition (A) , the keratin fibers are optionally rinsed with water or optionally undergo washing with a shampoo followed by rinsing with water, before possibly being dried totally or partially with a drying device. heating or absorbent material such as a towel or paper, or left to air dry.

Drying can be done using absorbent paper, a towel, a hairdryer or a hairdressing helmet.

Preferably, the keratin fibers are neither rinsed with water nor washed with a shampoo after application of composition (A) .

Preferably, the keratin fibers are partially dried or left to partially dry in the open air after application of composition (A) .

When implementing the process according to the present invention, the application of composition (A) can be repeated several times.

Composition (B)

Composition (B) is applied to the keratin fibers in a quantity preferably ranging from 0.1g to 20g of composition per gram of keratin fibers.

Composition ( B ) is left to sit on the keratin fibers for a duration preferably ranging from 1 minute to 1 hour, more preferably ranging from 5 minutes to 60 minutes. For example, composition ( B ) is left on the keratin fibers for 50 minutes.

The application temperature of composition (B) is conventionally between room temperature (between 15 to 25°C) and 80°C, preferably between room temperature and 60°C.

According to a preferred embodiment, composition (B) is applied at 33°C.

Composition ( B ) can be left on the fibers under an occlusive system. As a non-limiting example of an occlusive system, we can cite an occlusive system of the aluminum foil or plastic film or charlotte type with or without holes.

After application of composition (B) , the keratin fibers are optionally rinsed with water or optionally undergo washing with a shampoo followed by rinsing with water, before possibly being dried or left to dry in the oven. outdoors.

Drying can be done using absorbent paper, a towel, a heating device such as a hair dryer, heat lamps or a hair styling helmet.

Composition (B) used in the process according to the present invention is preferably prepared by mixing at least two compositions. Preferably, the mixture of said at least two compositions is carried out immediately, before applying the composition to the keratin fibers.

According to a preferred embodiment, the composition(B)comes from the mixture:
▪ of a composition( B1 )including:
- one or more chemical oxidizing agents chosen from hydrogen peroxide, hydrogen peroxide generating systems other than peroxygenated salts and their mixtures as defined above, preferably hydrogen peroxide; And
▪ of a composition(B 2 )including:
- one or more compounds chosen from carbonates, carbonate generating systems, bicarbonates, bicarbonate generating systems and their mixtures as defined above, preferably chosen from carbonates, bicarbonates and their mixtures as defined above; And
- one or more silicates as defined above; And
- optionally one or more coloring agents, preferably chosen from direct dyes, oxidation dyes and their mixtures; And
▪ possibly a composition( B3 )including:
- one or more coloring agents, preferably chosen from direct dyes, oxidation dyes and mixtures thereof.

According to a preferred embodiment, the process according to the present invention is a process for lightening keratin fibers in which composition (B) comes from the mixture:
▪ a composition ( B1 ) comprising:
- one or more chemical oxidizing agents chosen from hydrogen peroxide, hydrogen peroxide generating systems other than peroxygenated salts and their mixtures as defined above, preferably hydrogen peroxide; And
▪ a composition ( B2 ) comprising:
- one or more compounds chosen from carbonates, carbonate generating systems, bicarbonates, bicarbonate generating systems and their mixtures as defined above, preferably chosen from carbonates, bicarbonates and their mixtures as defined above; And
- one or more silicates as defined above.

According to another preferred embodiment, the process according to the present invention is a process for simultaneous bleaching and coloring of keratin fibers in which composition (B) comes from the mixture:
▪ a composition ( B1 ) comprising:
- one or more chemical oxidizing agents chosen from hydrogen peroxide, hydrogen peroxide generating systems other than peroxygenated salts and their mixtures as defined above, preferably hydrogen peroxide; And
▪ a composition (B 2 ) comprising:
- one or more compounds chosen from carbonates, carbonate generating systems, bicarbonates, bicarbonate generating systems and their mixtures as defined above, preferably chosen from carbonates, bicarbonates and their mixtures as defined above; And
- one or more silicates as defined above; And
- one or more coloring agents, preferably chosen from direct dyes, oxidation dyes and mixtures thereof.

According to another preferred embodiment, the process according to the present invention is a process for simultaneous bleaching and coloring of keratin fibers in which the composition(B)comes from the mixture:
▪ of a composition( B1 )including:
- one or more chemical oxidizing agents chosen from hydrogen peroxide, hydrogen peroxide generating systems other than peroxygenated salts and their mixtures as defined above, preferably hydrogen peroxide; And
▪ of a composition(B 2 )including:
- one or more compounds chosen from carbonates, carbonate generating systems, bicarbonates, bicarbonate generating systems and their mixtures as defined above, preferably chosen from carbonates, bicarbonates and their mixtures as defined above; And
- one or more silicates as defined above; And
▪ of a composition( B3 )including one or more coloring agents, preferably chosen from direct dyes, oxidation dyes and mixtures thereof

Preferably, at least one of the compositions ( B1 ) or (B 2 ) or at least one of the three compositions ( B1 ) or (B 2 ) or ( B3 ) is aqueous. More preferably, the composition ( B1 ) is aqueous.

According to a particular embodiment, the composition (B 2 ) is anhydrous.

According to a particular embodiment, the composition( B1 )is aqueous, the composition(B 2 ) is anhydrous and the composition( B3 )when present is watery.

By "aqueous composition" is meant a composition comprising at least 2% by weight of water, preferably at least 5% by weight of water, more preferably at least 10% by weight of water, and even more advantageously more than 20% by weight of water.

By “anhydrous composition” is meant a composition containing less than 2% by weight of water, preferably less than 0.5% by weight of water, more preferably free of water. Where appropriate, such small quantities of water may in particular be provided by ingredients of the composition which may contain residual quantities.

Composition (C)

The composition ( C ) is applied to dry or wet keratin fibers, preferably to wet keratin fibers.

The composition ( C ) is applied to the keratin fibers in a quantity preferably ranging from 0.01g to 5g, more preferably ranging from 0.05g to 5g of composition ( C ) per gram of keratin fibers.

The composition ( C ) is left to sit on the keratin fibers for a duration preferably ranging from 30 seconds to 30 minutes, more preferably ranging from 2 minutes to 10 minutes.

The application temperature of the composition ( C ) is conventionally between room temperature (between 15 to 25°C) and 70°C.

According to a preferred embodiment, composition (C) is applied at room temperature (between 15 to 25°C).

The composition ( C ) can be left on the fibers under an occlusive system. As a non-limiting example of an occlusive system, we can cite an occlusive system of the aluminum foil or plastic film or charlotte type with or without holes.

According to a preferred embodiment, the composition ( C ) is in the form of a shampoo. After application of composition (C) , the keratin fibers are preferably rinsed with water and optionally treated using a conditioner, lotion or mask type composition, before possibly being dried or left to dry at the open air.

According to another preferred embodiment, composition (C) is in the form of a conditioner composition, eg a conditioner, a lotion or a mask. According to this other embodiment, the method comprises, between the step of applying composition (B) and the step of applying composition (C) , a step of washing the keratin fibers with a shampoo followed by a rinse with water. According to this other embodiment, after application of composition (C) , the keratin fibers are preferably rinsed with water, before possibly being dried or left to dry in the open air.

When implementing the method according to the present invention, the application of composition (C) can be repeated several times. For example, the application of composition (C) can be repeated 1 to 5 times.

Multi-compartment device (kit)

According to a second aspect, the present invention relates to a device with several compartments comprising:
▪ a first compartment containing a composition(B1) including:
- one or more chemical oxidizing agents chosen from hydrogen peroxide, hydrogen peroxide generating systems other than peroxygenated salts and their mixtures; And
▪ a second compartment containing a composition(B 2 ) including:
- one or more compounds chosen from carbonates, carbonate generating systems, bicarbonates, bicarbonate generating systems and mixtures thereof; And
- one or more silicates; And
▪ possibly another compartment containing a composition(B3) including one or more coloring agents, preferably chosen from direct dyes, oxidation dyes and mixtures thereof; And
▪ possibly another compartment containing a composition(HAS)as defined previously; And
▪ possibly another compartment containing a composition( VS )as defined previously;
Being heard that :
- at least one of the compositions(B1),(B2),(B3),(HAS)Or(VS)comprises one or more amino alkoxysilanes as defined above; And
- possibly at least one of the compositions(B2),(HAS)Or(VS)comprises one or more coloring agents, preferably chosen from direct dyes, oxidation dyes and mixtures thereof.

Composition (B)

According to a third aspect, the subject of the present invention is composition (B) as defined above, comprising one or more amino alkoxysilanes as defined above and optionally one or more coloring agents, preferably chosen from direct dyes, dyes. oxidation and their mixtures.

Composition (B2)

According to a fourth aspect, the subject of the present invention is the composition (B2) as defined above comprising one or more amino alkoxysilanes as defined above and optionally one or more coloring agents, preferably chosen from direct dyes, dyes of oxidation and their mixtures.

Examples

The examples which follow allow a better understanding of the invention without being limiting. In the examples which follow, unless otherwise indicated, all quantities are indicated as a percentage by weight relative to the total weight of the composition.

Color evaluation method

In these examples, the color of the highlights was evaluated in the CIE L* a* b* system, using a Minolta Spectrophotometer CM3610A colorimeter, (Illuminant D65).
In this L* a* b* system, L* represents the intensity of the color, a* indicates the shade of the color on the green/red color axis and b* the shade of color along the color axis blue/yellow. The higher the L* value, the lighter the color. The higher the value of a*, the redder the color and the higher the value of b*, the more yellow the color.

Example 1 (Comparison)

The following compositions 1 to 12 were prepared then applied according to the application protocol described below:

Ingredients Compositions 1 2 3 4 5 6 Oxidizing cream
Blond Studio 40 Vol.
L'Oreal Professional
(12% H ₂ O ₂ ) 70.0
(Or 8.4
of H ₂ O ₂ ) 70.0
(Or 8.4
of H ₂ O ₂ ) 70.0
(Or 8.4
of H ₂ O ₂ ) 70.0
(Or 8.4
of H ₂ O ₂ ) 70.0
(Or 8.4
of H ₂ O ₂ ) 70.0
(Or 8.4
of H ₂ O ₂ ) Potassium Persulfate 15.0 12.5 10.0 8.0 6.0 4.0 Sodium Silicate
(CAS: 1344-09-8) 10.0 10.0 10.0 8.0 8.0 8.0 Water
Qsp 100 Qsp 100 Qsp 100 Qsp 100 Qsp 100 Qsp 100

Ingredients Compositions 7 8 9 10 11 12 Oxidizing cream
Blond Studio 40 Vol.
L'Oreal Professional
(12% H ₂ O ₂ ) 70.0
(Or 8.4
of H ₂ O ₂ ) 70.0
(Or 8.4
of H ₂ O ₂ ) 70.0
(Or 8.4
of H ₂ O ₂ ) 70.0
(Or 8.4
of H ₂ O ₂ ) 70.0
(Or 8.4
of H ₂ O ₂ ) 70.0
(Or 8.4
of H ₂ O ₂ ) Potassium Persulfate 8.0 6.0 4.0 8.0 6.0 4.0 Sodium Silicate
(CAS: 1344-09-8) 6.0 6.0 6.0 4.0 4.0 4.0 Water
Qsp 100 Qsp 100 Qsp 100 Qsp 100 Qsp 100 Qsp 100

Application protocol
10g of each of compositions 1 to 12 are applied to 12 1g strands of Caucasian HT4 type hair on a heating plate maintained at a temperature of 33°C. The whole is covered with cellophane film for 50 min.
The strands are then rinsed, washed with a standard shampoo, rinsed again and then dried.

Colorimetric measurements

The results of the colorimetric measurements are summarized in the following table:

Composition L* b* 1 57.37 30.95 2 56.34 31.74 3 54.6 30.25 4 54.05 30.19 5 50.62 28.88 6 48.51 29.48 7 49.91 29.48 8 47.53 27.87 9 46.64 26.82 10 47.01 27.04 11 45.33 26.08 12 41.44 23.77

The results show that comparative compositions comprising a persulfate make it possible to obtain a good level of lightening characterized by relatively high L* values but the color shades obtained have a pronounced yellow component characterized by high b* values.

Example 2

The following composition B _x was prepared then applied according to the application protocol described below:

Ingredients B _x Oxidizing cream
Blonde Studio 30 Vol.
L'Oreal Professional
(9% H ₂ O ₂ ) 60.0
(Or 5.4
of H ₂ O ₂ ) Sodium Silicate
(CAS: 1344-09-8) 13.0 Sodium Metasilicate
(CAS: 6834-92-0) 4.5 Ammonium Bicarbonate 13.33 Aminopropyl Triethoxysilane (APTES) 4,585 Water 4,585

Application protocol
10g of composition B _x are applied to a 1g strand of Caucasian HT4 type hair on a heating plate maintained at a temperature of 33°C. The whole thing is covered with cellophane film for 50 minutes.
The lock is then rinsed, washed with a standard shampoo, rinsed again and then dried.

Colorimetric measurements

The results of the colorimetric measurements are summarized in the following table:

Composition L* b* B _x 43.46 19.8

The results show that the process according to the invention makes it possible to obtain a good level of lightening characterized by a relatively high value of L*. In addition, the shade of color obtained is characterized by a lower b* value at equivalent intensity level L* for the process according to the present invention than for the comparative process using compositions based on persulfate of the example 1 as illustrated in .

Example 3

The following compositions A _x and B _y were prepared then applied according to the application protocol described below:

Ingredients HAS _x Aminopropyl Triethoxysilane (APTES) 5.0 Water Qsp 100

Ingredients B _y Oxidizing cream
Blonde Studio 30 Vol.
L'Oreal Professional
(9% H ₂ O ₂ ) 60.0
(Or 5.4
of H ₂ O ₂ ) Sodium Silicate
(CAS: 1344-09-8) 13.0 Sodium Metasilicate
(CAS: 6834-92-0) 4.5 Ammonium Bicarbonate 13.33 Water 9.17

Application protocol
0.4 g of composition A _x are applied to a 1 g strand of Caucasian HT4 hair.
The wick is then left to rest for 5 minutes then wiped dry.
10g of composition B _are then applied to the wick on a heating plate maintained at a temperature of 33°C. The whole thing is covered with cellophane film for 50 minutes.
The lock is then rinsed, washed with a standard shampoo, rinsed again and then dried.

Colorimetric measurements

The results of the colorimetric measurements are summarized in the following table:

Composition s L* b* HAS _x then B _y 51.17 23.68

The results show that the process according to the invention makes it possible to obtain a good level of lightening characterized by a relatively high value of L*. In addition, the shade of color obtained is characterized by a lower b* value at equivalent intensity level L* for the process according to the present invention than for the comparative process using compositions based on persulfate of the example 1 as illustrated in .

Claims (26)

Process for treating keratin fibers comprising:
a) the application to the keratin fibers of one or more amino alkoxysilanes chosen from the compounds of formula(I)following and/or their oligomers:

in which :
-Rarepresents a hydroxy group (OH), an alkyl group having from 1 to 20 carbon atoms, preferably methyl, or an alkoxy group having from 1 to 10 carbon atoms, preferably from 1 to 6 carbon atoms, in particular a ethoxy group;
-RbAndRC, identical or different represent a hydrogen atom, an alkyl group having from 1 to 20 carbon atoms, preferably from 1 to 6 carbon atoms, in particular an ethyl group; it being understood that ifRadoes not represent an alkoxy group, thenRbAndRCcannot simultaneously represent a hydrogen atom;
-idesignates an integer ranging from 1 to 20, preferably ranging from 1 to 6, in particular from 1 to 3 such as 3;
b) the application to the keratin fibers of a composition(B)including:
i) one or more chemical oxidizing agents chosen from hydrogen peroxide, hydrogen peroxide generating systems other than peroxygenated salts and their mixtures;
ii) one or more compounds chosen from carbonates, carbonate generating systems, bicarbonates, bicarbonate generating systems and mixtures thereof, preferably from carbonates, bicarbonates and mixtures thereof;
iii) one or more silicates;
in which the amino alkoxysilane(s) are included:
- in the composition(B); and or
- in a separate composition(HAS), the composition(HAS)being applied to the keratin fibers before the composition(B); and or
- in a separate composition(VS), the composition(VS)being applied to the keratin fibers after the composition(B);
Being heard that :
- the essays(HAS)And(VS)may be the same or different; And
- possibly at least one of the compositions(HAS),(B)Or(VS)comprises one or more dyes, preferably chosen from direct dyes, oxidation dyes and mixtures thereof. Method according to the preceding claim, in which:
- the amino alkoxysilane(s) are present in the composition(HAS)in a total content by weight ranging from 1% to 40% by weight, preferably ranging from 2% to 35% by weight, more preferably ranging from 3% to 35% by weight, even more preferably ranging from 4% to 10% in weight relative to the total point of the composition(HAS) ; and or
- the amino alkoxysilane(s) are present in the composition( B )in a total content by weight ranging from 1% to 40% by weight, preferably ranging from 2% to 35% by weight, more preferably ranging from 3% to 35% by weight, even more preferably ranging from 4% to 10% in weight relative to the total point of the composition( B ) ; and or
- the amino alkoxysilane(s) are present in the composition( VS )in a total content by weight ranging from 1% to 40% by weight, preferably ranging from 2% to 35% by weight, more preferably ranging from 3% to 35% by weight, even more preferably ranging from 4% to 10% in weight relative to the total point of the composition( VS ). Process according to any one of the preceding claims, in which the amino alkoxysilane(s) are chosen from the compounds of formula (I) as defined above and/or their oligomers, formula (I) in which:
- Ra designates an alkoxy group having from 1 to 10 carbon atoms, preferably from 1 to 6 carbon atoms, more preferably an ethoxy group;
- Rb and Rc independently represent an alkyl group having from 1 to 20 carbon atoms, preferably from 1 to 6 carbon atoms, more preferably an ethyl group;
the amino alkoxysilane preferably being 3-aminopropyltriethoxysilane (APTES). Process according to any one of the preceding claims, in which the chemical oxidizing agent included in composition (B) is hydrogen peroxide. Process according to any one of the preceding claims, in which the chemical oxidizing agent(s) are present in composition (B) in a total content ranging from 1% to 12% by weight, preferably ranging from 3% to 9% by weight. weight, more preferably ranging from 3.5% to 8.5% by weight, relative to the total weight of composition (B) . Process according to any one of the preceding claims, in which the compound(s) ii) are present in the composition (B) in a total content ranging from 0.01% to 20% by weight, preferably ranging from 1% to 20 % by weight, more preferably ranging from 2% to 20% by weight, even more preferably ranging from 4% to 20% by weight, relative to the total weight of composition (B) . Process according to any one of the preceding claims, in which the compound(s) ii) are chosen from carbonates, carbonate-generating systems and mixtures thereof, preferably from carbonates. Process according to any one of the preceding claims, in which the carbonate(s) and/or the carbonate-generating system(s) are present in the composition (B) in a total content ranging from 0.01% to 20% by weight, preferably ranging from 1% to 20% by weight, more preferably ranging from 1% to 15% by weight relative to the total weight of composition (B) . Process according to any one of the preceding claims, in which the carbonate(s) are chosen from:
- alkali metal carbonates;
- alkaline earth metal carbonates;
- lanthanide carbonates;
- transition metal carbonates;
- bismuth carbonate;
- cadmium carbonate;
- thallium carbonate;
- zinc carbonate;
- the compounds of formula (N ⁺ R ¹ R ² R ³ R ⁴ ) ₂ , CO ₃ ^2- in which R ¹ , R ² , R ³ and R ⁴ independently represent a hydrogen atom or a group (C ₁ -C ₄ )alkyl optionally substituted by a hydroxyl group;
- guanidine carbonate;
- their mixtures;
preferably, the carbonates are chosen from sodium carbonate, potassium carbonate, cesium carbonate, lithium carbonate, magnesium carbonate, calcium carbonate, barium carbonate, strontium carbonate, carbonate cerium, lanthanum carbonate, yttrium carbonate, copper (II) carbonate, manganese carbonate, nickel carbonate, silver carbonate, zirconium carbonate, bismuth carbonate, carbonate cadmium carbonate, thallium carbonate, zinc carbonate, ammonium carbonate, guanidine carbonate, tetraethylammonium carbonate and their mixtures, more preferably from sodium carbonate, potassium carbonate, cesium carbonate, magnesium carbonate, calcium carbonate, cerium carbonate, manganese carbonate, zinc carbonate, ammonium carbonate, guanidine carbonate and their mixtures, even more preferably among sodium carbonate, carbonate potassium, magnesium carbonate, calcium carbonate, ammonium carbonate and their mixtures, most preferably, the carbonate is ammonium carbonate. Process according to any one of the preceding claims, in which the compound(s) ii) are chosen from bicarbonates, bicarbonate generating systems and mixtures thereof, preferably from bicarbonates. Process according to any one of the preceding claims, in which the bicarbonate(s) and/or the bicarbonate-generating system(s) are present in composition (B) in a total content ranging from 0.01% to 20% by weight, preferably ranging from 1% to 20% by weight, more preferably ranging from 2% to 20% by weight, even more preferably ranging from 4% to 20% by weight relative to the total weight of composition (B) . Process according to any one of the preceding claims, in which the bicarbonate(s) are chosen from:
- alkali metal bicarbonates;
- alkaline earth metal bicarbonates;
- the compounds of formula N ⁺ R ¹ R ² R ³ R ⁴ , HCO ₃ ^- in which R ¹ , R ² , R ³ and R ⁴ independently represent a hydrogen atom or a group (C ₁ - C ₄ ) alkyl optionally substituted by a hydroxyl group;
- aminoguanidine bicarbonate;
- their mixtures;
preferably from sodium bicarbonate, potassium bicarbonate, lithium bicarbonate, cesium bicarbonate, calcium bicarbonate, magnesium bicarbonate, ammonium bicarbonate, choline bicarbonate, triethylammonium bicarbonate, aminoguanidine bicarbonate and mixtures thereof; more preferably from sodium bicarbonate, potassium bicarbonate, cesium bicarbonate, calcium bicarbonate, magnesium bicarbonate, ammonium bicarbonate and mixtures thereof, more preferably from sodium bicarbonate, potassium bicarbonate, cesium bicarbonate, calcium bicarbonate, magnesium bicarbonate, ammonium bicarbonate and their mixtures, even more preferably among sodium bicarbonate, potassium bicarbonate, ammonium bicarbonate and their mixtures, most preferably bicarbonate is ammonium bicarbonate. Process according to any one of the preceding claims, in which the silicate(s) are chosen from alkali metal silicates, alkaline earth metal silicates, aluminum silicates, trimethylammonium silicates and mixtures thereof, preferably from sodium silicates, potassium silicates, calcium silicates, aluminum silicates, trimethylammonium silicates and their mixtures, more preferably among the sodium silicates, even more preferentially among the compounds having for INCI Sodium Silicate and/or or Sodium Metasilicate. Process according to any one of the preceding claims, in which the silicate(s) are present in composition (B) in a total content ranging from 1% to 40% by weight, preferably from 2% to 35% by weight, plus preferably from 3% to 35%, even more preferably ranging from 4% to 20% by weight relative to the total weight of composition (B) . Process according to any one of the preceding claims, in which the weight ratio total quantity of bicarbonate(s) and/or bicarbonate-generating system(s)/total quantity of silicate(s) in the composition ( B) is from 0.00025 to 20, preferably from 0.02 to 7.5, more preferably from 0.05 to 5. Process according to any one of the preceding claims, in which the weight ratio of total quantity of bicarbonate(s) and/or bicarbonate-generating system(s)/total quantity of oxidizing agent(s) chemical(s) in composition (B) is from 0.0008 to 20, preferably from 0.11 to 5, more preferably from 0.2 to 4.2. Method according to any one of the preceding claims, in which the weight ratio total quantity of carbonate(s) and/or carbonate-generating system(s)/total quantity of bicarbonate(s) and/or system (s) bicarbonate generator(s) in composition (B) is from 0.0005 to 2000, preferably from 0.06 to 20, more preferably from 0.06 to 5. Process according to any one of the preceding claims, in which the composition (B) comprises a total magnesium carbonate content of less than 5% by weight, preferably less than 1% by weight, more preferably less than 0.1% by weight. weight, even more preferably less than 0.01% by weight, most preferably less than 0.001% by weight, and better still the composition (B) is free of magnesium carbonate. Process according to any one of the preceding claims, in which the composition (B) comprises a total persulfate content of less than 10% by weight, preferably less than 5% by weight, more preferably less than 1% by weight, even more preferably less than 0.1% by weight, most preferably less than 0.01% by weight, and better still less than 0.001% by weight, and even better the composition (B) is free of persulfates. Process according to any one of the preceding claims, in which the pH of the composition (B) varies from 8 to 11, preferably from 8 to 10.5, more preferably from 8 to 10, even more preferably from 8.3 to 10. Process according to any one of the preceding claims, in which the composition (B) comprises one or more coloring agents, preferably chosen from direct dyes, oxidation dyes and mixtures thereof. Process according to any one of claims 1 to 20, in which the composition(B) comprises a total content of coloring agents less than 0.1% by weight, preferably less than 0.01% by weight, more preferably less than 0.001% by weight relative to the total weight of the composition(B), even more preferably, the composition(B)is free of coloring agents. Process according to any one of the preceding claims, in which the composition(B) comes from the mixture:
▪ of a composition( B1 )including:
- one or more chemical oxidizing agents chosen from hydrogen peroxide, hydrogen peroxide generating systems other than peroxygenated salts and their mixtures as defined in claim 1 or 4; And
▪ of a composition(B 2 )including:
- one or more compounds chosen from carbonates, carbonate generating systems, bicarbonates, bicarbonate generating systems and their mixtures as defined in claim 1, 7, 9, 10 or 12; And
- one or more silicates as defined in claim 1 or 13; And
- optionally one or more coloring agents, preferably chosen from direct dyes, oxidation dyes and their mixtures; And
▪ possibly a composition( B3 )including one or more coloring agents, preferably chosen from direct dyes, oxidation dyes and mixtures thereof. Multi-compartment device comprising:
▪ a first compartment containing a composition(B1)as defined in claim 23; And
▪ a second compartment containing a composition(B 2 ) as defined in claim 23; And
▪ possibly another compartment containing a composition(B3) as defined in claim 23; And
▪ possibly another compartment containing a composition(HAS)as defined in any one of claims 1 to 3; And
▪ possibly another compartment containing a composition( VS )as defined in any one of claims 1 to 3;
Being heard that :
- at least one of the compositions(B1),(B2),(B3),(HAS)Or(VS)comprises one or more amino alkoxysilanes as defined in claim 1 or 3; And
- possibly at least one of the compositions(B2),(HAS)Or(VS)comprises one or more coloring agents, preferably chosen from direct dyes, oxidation dyes and mixtures thereof. Composition (B) as defined in any one of claims 1, 2 or 4 to 23 comprising one or more amino alkoxysilanes as defined in claim 1 or 3 and optionally one or more coloring agents, preferably chosen from dyes direct, oxidation dyes and their mixtures. Composition (B2) as defined in claim 23 comprising one or more amino alkoxysilanes as defined in claim 1 or 3 and optionally one or more coloring agents, preferably chosen from direct dyes, oxidation dyes and mixtures thereof .